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    Ferrite Beads

    Ferrite Beads also known as ferrite chokes are passive devices and they are used to constrict high-frequency signals in electronic components. The ferrite becomes resistive over its intended frequency range and uses up the noise energy in the form of heat.

    How do the ferrite beads work?

    The ferrite bead is connected in series with the power supply rail and is often combined with the capacitors to ground on either side of the bead. This then forms a low-pass filter network, further reducing the high-frequency power supply noise. Use SPICE (Simulation Program with Integrated Circuit Emphasis) or another similar tool to ensure any anti-resonance peaks caused by ferrite or PCB inductive structure does not violate the target impedance limit.

    Ferrite Beads come in two categories:

    • High-Q Beads - typically used as resonators and must not be used in power isolation circuits
    • Low-Q Beads - these are also called absorptive beads and they are lossy and make good filter networks because they are designed to absorb high-frequency noise currents and dissipate it as heat

    What to consider when choosing Ferrite Beads?

    • Make sure that any voltage drop does not cause the target supply rail to fall below the recommended operating conditions of the device
    • The ferrite bead is inductive, therefore do not use it with High-Q decoupling capacitors
    • Applying ferrite beads correctly can be an effective and inexpensive way to reduce high-frequency noise and switching transients

    Where are Ferrite Beads used?

    • Eliminating high-frequency EMI noise on any circuit design
    • Electronic devices such as mobile phones
    • Computers and laptops
    • TV tuners
    • Audio Players
    • DVD's
    • Gaming Systems

    2058 產品顯示為 Ferrite Beads

    个(每托盘 10 )
    HK$1.42
    Wurth Elektronik
    0603 (1608M)
    -
    -
    60Ω
    -
    -
    -
    3A
    EMI Suppression
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    40mΩ
    -
    个(每托盘 10 )
    HK$1.79
    Wurth Elektronik
    0805 (2012M)
    -
    -
    10Ω
    -
    -
    -
    3A
    EMI Suppression
    2 x 1.2 x 0.9mm
    2mm
    1.2mm
    0.9mm
    25mΩ
    -
    HK$0.202
    Murata
    0201
    55.6Ω
    87.5Ω
    120Ω
    178Ω
    -
    187Ω
    -
    Chip Ferrite Bead
    0.6 x 0.3 x 0.3mm
    -
    -
    -
    -
    -
    个(每带 4000 )
    HK$0.46
    Murata
    0603
    348Ω
    471Ω
    600Ω
    626Ω
    -
    247Ω
    -
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    -
    -
    -
    -
    -
    个 (以毎袋:10)
    HK$5.02
    Wurth Elektronik
    SMD
    58Ω
    -
    42Ω
    -
    -
    -
    6A
    High Current
    4 x 3 x 2.55mm
    4mm
    3mm
    2.55mm
    900mΩ
    -
    HK$0.705
    Murata
    0603
    348Ω
    471Ω
    600Ω
    626Ω
    -
    247Ω
    -
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    -
    -
    -
    -
    -
    HK$0.848
    Murata
    0603
    17Ω
    22.8Ω
    30Ω
    34.7Ω
    -
    36.2Ω
    -
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    -
    -
    -
    -
    -
    个(每托盘 200 )
    HK$0.239
    Murata
    0402 (1005M)
    -
    -
    220Ω
    -
    -
    -
    300mA
    Chip Bead
    1 x 0.5 x 0.5mm
    1mm
    0.5mm
    0.5mm
    0.35Ω
    -
    HK$1.274
    Murata
    0603
    243Ω
    364Ω
    470Ω
    404Ω
    -
    142Ω
    -
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    -
    -
    -
    -
    -
    个 (以每卷裝提供)
    HK$1.50
    Wurth Elektronik
    0603 (1608M)
    -
    -
    220Ω
    -
    -
    -
    500mA
    EMI Suppression
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    300mΩ
    -
    个 (以毎帶裝提供)
    HK$5.40
    Wurth Elektronik
    1812 (4532M)
    -
    -
    100Ω
    -
    -
    -
    8A
    Bead
    4.5 x 3.2 x 2.3mm
    4.5mm
    3.2mm
    2.3mm
    6mΩ
    -
    • RS庫存編號 245-5674
    • 製造零件編號 BMC1HY0150AN
    HK$0.525
    TE Connectivity
    0201
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    个 (以每卷裝提供)
    HK$1.368
    Wurth Elektronik
    0603 (1608M)
    -
    -
    600Ω
    -
    -
    -
    1A
    Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    200mΩ
    -
    个 (以每卷裝提供)
    HK$1.38
    Wurth Elektronik
    0603 (1608M)
    -
    -
    600Ω
    -
    -
    -
    300mA
    EMI Suppression
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    650mΩ
    -
    个 (以每卷裝提供)
    HK$19.80
    Wurth Elektronik
    SMD
    34Ω
    -
    52Ω
    -
    -
    -
    5A
    Bead
    8.9 x 5.6 x 2.5mm
    8.9mm
    5.6mm
    2.5mm
    3mΩ
    -
    个 (以每卷裝提供)
    HK$1.564
    Wurth Elektronik
    0805 (2012M)
    -
    -
    600Ω
    -
    -
    -
    2A
    Ferrite Bead
    2 x 1.2 x 0.9mm
    2mm
    1.2mm
    0.9mm
    150mΩ
    -
    个(每托盘 10 )
    HK$1.44
    Wurth Elektronik
    0805 (2012M)
    -
    -
    22Ω
    -
    -
    -
    6A
    EMI Suppression
    2 x 1.2 x 0.9mm
    2mm
    1.2mm
    0.9mm
    8mΩ
    -
    个(每托盘 20 )
    HK$0.325
    Murata
    0603 (1608M)
    -
    -
    1000Ω
    -
    -
    -
    400mA
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    500mΩ
    -
    个 (以每卷裝提供)
    HK$0.348
    Murata
    0603 (1608M)
    -
    -
    470Ω
    -
    -
    -
    1A
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    200mΩ
    -
    • RS庫存編號 265-1651
    • 製造零件編號 74270015
    HK$4.66
    Wurth Elektronik
    Axial
    -
    -
    -
    -
    -
    -
    -
    EMI Suppression
    4 x 2 x 10mm
    -
    -
    -
    -
    -
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